Annual % of total population
1960 40.7997405270107
1961 40.8082290374197
1962 40.8177445928791
1963 40.8664078129045
1964 40.9649875920453
1965 41.0679792944277
1966 41.1562380695827
1967 41.2406232578941
1968 41.318555712087
1969 41.3853085688275
1970 41.4387467105568
1971 41.4792075621973
1972 41.5036784983283
1973 41.4997832117242
1974 41.4753683110397
1975 41.4450241196183
1976 41.4115042353632
1977 41.3779519705469
1978 41.3429952703476
1979 41.3072198318118
1980 41.272035813255
1981 41.2373770689207
1982 41.1974477215645
1983 41.1460440282194
1984 41.0868393926256
1985 41.0264139951735
1986 40.9630475884405
1987 40.8976911651223
1988 40.8269709667975
1989 40.7438604984013
1990 40.6518649752152
1991 40.5443781003745
1992 40.412498940079
1993 40.2193137414153
1994 39.9770527205784
1995 39.7341366349415
1996 39.4923778066523
1997 39.2442224657961
1998 38.9883742202177
1999 38.729353798901
2000 38.4507188464195
2001 38.15850613829
2002 37.8462568126155
2003 37.4979215839286
2004 37.124586831627
2005 36.7322169030438
2006 36.3409478224762
2007 35.9581746841157
2008 35.5774800156225
2009 35.2058971373653
2010 34.8456919775029
2011 34.4884554717374
2012 34.1377761349261
2013 33.7908737768828
2014 33.4329914731514
2015 33.0737891966658
2016 32.7262090689656
2017 32.3860928744601
2018 32.0466782488527
2019 31.7083406408142
2020 31.4020327472097
2021 31.1219852986952
2022 30.8275449091999
2023 30.4869907917548